I used this plugin “jQuery Migrate”.
https://wordpress.org/plugins/enable-jquery-migrate-helper/
On the plugin settings page set “jQuery Version” to “Legacy 1.12.4-wp”.
I think will fix the error.

You download Wordpress/woo-commerce plugin from

Jazz-cash payment gateway sandbox portal
32e5e897-af97-458d-bb2f-3b407ae7863a-image.png
1cd31836-d3da-45d7-955f-430089d19b2a-image.png Wordpress plugin page search for the jazz-cash plugin.
Click on install button and plugin will be install after installation process is complete Click on activate button to activate the Jazz-cash plugin, and provide the credentials like merchantID, password, integrity salt and return URL. and click on save button and enjoy.

Strategically make JavaScript and CSS external to utilize browser caching.

Details from Yahoo!

Using external files in the real world generally produces faster pages because the JavaScript and CSS files are cached by the browser.

JavaScript and CSS that are inlined in HTML documents get downloaded every time the HTML document is requested. This reduces the number of HTTP requests that are needed, but increases the size of the HTML document.

On the other hand, if the JavaScript and CSS are in external files cached by the browser, the size of the HTML document is reduced without increasing the number of HTTP requests.

mostly this kind of error is caused by missing an .htaccess file in your root wordpress directory ,
Please check that
if . htaccess no available create a new on in root of wp and past that default Wordpress configuration.

# BEGIN WordPress RewriteEngine On RewriteBase / RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] # END WordPress